detect and continually record...
SILICA
concentration down to 0.001 ppm
with
the
T E C H N I C O N
NEW PRODUCTS paring t h e spectral curve produced b y the film with a polystyrene curve printed on t h e back of t h e calibrator, the operator is able t o check t h e in strument for calibration, resolution, and stray light. Beckman Scientific a n d Process I n s t r u m e n t s Division. P-3
Recording Spectrophotometer Model 14H is designed for analysis of samples a t temperatures u p to 1000° C. T h e unit has a large cell area which will accommodate a variety of special cell arrangements; free space along t h e compartment's optical p a t h is 16 in. Range of operation is from 1860 A. t o
1
j±\u/i?/\l\sl yzer ® A f i e l d - p r o v e n s y s t e m . . . over 1500 AutoAnalyzers are now automating routine wet-chemistry analyses in plants a n d laboratories throughout the free world . . . analyzing up t o 60 repetitive samples per hour and monitoring on-stream continuously. *Detects other trace elements too, e.g.; iron, copper, sugar, chloride, phosphate, etc. A total of 60 fully-automated determi nations now possible, more are coming. Send for your free abstract method kit and brochure AKB today
TECHNICON
CONTROLS, INC.
R E S E A R C H PARK · C H A U ΝC E Y, N. Y. Circle No. 189 on Readers' Service Card
Needed
Now
Health Physicist: To direct a n d perform health physics and industrial hygiene work at various W T R facilities. Work will also include non-health physics engineering that pertains t o reactor a n d hot lab work. Must have A.B. or B.S. degree and additional training in health physics. / / you qualify for any one of the above positions, write imme diately to: Mr. C. S. Southard, Westinghouse Atomic Power Division, P.O. Box 355, Dept.X-58, Pittsburgh 30, Pa.
Westinghouse ATOMIC POWER DIVISION FIRST IN ATOMIC
132 A
·
ANALYTICAL CHEMISTRY
POWER
2.65 μ» ith a resolution of 1.5 A. over most of the ultraviolet and visible a n d 4 A. in t h e near infrared ranges. Stray light is less than 0.001% over most of the range, a n d it is 0 . 1 % a t t h e range limits, according t o t h e company. A reverse beam operation is used through out t h e unit's range, designed to elimi nate measurement errors resulting from energy originating in t h e sample which might be within the range of t h e detec tor. T h e company says t h a t tempera tures above 1000° C. can be used if some additional instrument noise can be tolerated. Applied Phvsics Corp. P-4
Gas Chromatograph Model GC-2A uses a detection sys tem of t h e thermal conductivity fila m e n t type, with fast response full-flowcell geometry. T h e detector is said t o show a Dimbat-Porter-Stross sensitiv ity of 10,000 to 12,000 under favorable conditions, or of 5000 a t a noise level of less than 0.02 m v . under normal operating conditions. T h e sampling a p p a r a t u s for both liquids and gases is
